from __future__ import annotations

import datetime as dt
from typing import Optional

from sqlmodel import Field, SQLModel


class User(SQLModel, table=True):
    id: Optional[int] = Field(default=None, primary_key=True)
    username: str = Field(index=True, unique=True)
    password_hash: str
    created_at: dt.datetime = Field(default_factory=lambda: dt.datetime.now(dt.timezone.utc))